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WITH ABYC STANDARDS E-11) AC & DC ELECTRICAL
SYSTEMS ON BOATS, AND A-31) BATTERY CHARGERS &
INVERTERS
III) INSTALLATION
A) Materials Provided
The Phase Three charger is provided completely assembled
and ready for installation. Because of numerous installation
variables, the installer will need to provide four suitable
¼" mounting screws/washers, as well as DC output wiring
and connectors. Proper sizes and gauges for the wire and
connectors are noted in Section III-D following.
B) Location
The charger should be mounted on a wall, bulkhead or
other suitable mounting surfaces as close to the batteries to
be charged as possible. Do not mount the charger directly
over the batteries as fumes may cause excessive corrosion.
The area should be well ventilated and free from excessive
moisture, exhaust manifolds, and battery fumes.
Vertical mounting is preferred in order to allow the dripshield
to protect the charger from any moisture which may fall
onto the charger. However, vertical mounting is acceptable
since the charger is forced-air cooled. It should not be
located where there is a possibility of debris being drawn
into the unit through the fans.
If the charger is located in an extreme heat area, such
as an unventilated engine room, and the cooling fans
are unable to maintain proper operating temperature,
output power will automatically be reduced to protect the
charger. For maximum performance, the charger should
not be located in an area of extreme high temperature.
IMPORTANT: Although the charger is constructed of
materials and in a manner which make it highly resistive
to the corrosive effects of moisture in the environment, the
charger is not waterproof. Do not mount the charger where
there is a possibility of water entering the unit. Evidence
of water entry into the charger will void the warranty.
C) Mounting
The charger may be mounted on either a metal or non-
metal surface*. You will require four screws (wood or
machine screws, depending on mounting surface) with
washers, sized for ¼" holes, to mount the charger, plus two
temporary holding screws. Note that, in addition to the
four permanent mounting holes in the flanges, there is a
hole in each mounting flange which is "keyhole" shaped.
This is provided to ease vertical installation.
*To comply with ABYC DC chassis grounding conductor
(ABYC A-31), connect a suitable sized wire to the ¼"-20
chassis grounding stud near AC cable connector.
Make a mark on the wall or bulkhead where each of the
keyhole slots will be located. Then drive a screw about
half-way in at each of these marks. Hang the charger onto
the bulkhead using the "keyhole" slots. Doing this will save
you from having to support the charger's weight while you
are driving in the four permanent mounting screws. Note:
The "keyhole" slots may be used for additional support
screws but they are not to be used as permanent mounting
points, by themselves.
D) DC Output Wiring
Note: Only qualified service personnel should access the
output terminals of the charger.
Whether working with existing battery charger output
wires or installing new ones, make sure the battery(s) is
disconnected from these wires before connecting them to
the charger's output terminals
For a secure installation, DC output wires must be attached
with 1/4" ring crimp lug terminals sized appropriately to
fit wire gauges as listed below
The DC wire size table below may be used to determine
the correct gauge wire, based on the model you have
and the length of the wire run from the charger to the
batteries. Once the output wiring has been attached to
the chargers output posts, install the clear plastic terminal
cover provided with the charger
DC Wire Size Table
Model
10
PT-24-20U
#10 (6mm)
PT-40U
#6 (16mm)
* Based on ABYC 3% voltage drop table and NEC
minimum wire size chart
Figure 1: Simple D.C. Wiring (Preferred Method
Optional Temperature
Compensation Sensor.
See page 8 for installation.
Use provided cable clamps to
secrure probe cable.
* Per ABYC A-31: A D.C. chassis conductor shall be
DC Wire Size Table
15
20
Wire Gauge AWG (mm)
#10 (6mm)
#8 (10mm)
#4 (25mm)
#2 (35mm)
5
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